3种方式实现可滑动的Tab
1. 第一种，使用 TabHost + ViewPager 实现
该方法会有一个Bug，当设置tabHost.setCurrentTab()为0时，ViewPager不显示（准确的说是加载），只有点击其他任意一个tab后才会加载。
有解的同学吼一声~~~~~~~
Activity:
package com.swordy.demo.android.fragment; import java.util.Random; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentStatePagerAdapter; import android.support.v4.view.PagerAdapter; import android.support.v4.view.ViewPager; import android.support.v4.view.ViewPager.OnPageChangeListener; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.TabHost; import android.widget.TabHost.OnTabChangeListener; import android.widget.TabWidget; import android.widget.TextView; import com.swordy.demo.android.R; import com.swordy.library.android.util.ELog; /** * 1. 使用TabHost和ViewPager组合实现一个可以滑动的tab * 2. bug：如果当前页为0，则ViewPager第一次不加载。 * * @author swordy * @email [email protected] * @since Jan 20, 2014 * @version 1.0 */ public class SlideTabs1 extends FragmentActivity { private static final String TAG = "AndroidDemos.SlideTabs1"; private TabHost mTabHost; private ViewPager mViewPager; private PagerAdapter mPagerAdapter; private String[] addresses = { "first", "second", "third" }; @Override protected void onCreate(Bundle arg0) { super.onCreate(arg0); setContentView(R.layout.fragment_slidetabs1); mViewPager = (ViewPager) findViewById(R.id.viewPager1); mPagerAdapter = new MyPagerAdapter(getSupportFragmentManager()); mViewPager.setAdapter(mPagerAdapter); mTabHost = (TabHost) findViewById(android.R.id.tabhost); mTabHost.setup(); mTabHost.addTab(mTabHost.newTabSpec("one").setIndicator("one-1") .setContent(R.id.viewPager1)); mTabHost.addTab(mTabHost.newTabSpec("two").setIndicator("two-2") .setContent(R.id.viewPager1)); mTabHost.addTab(mTabHost.newTabSpec("three").setIndicator("three-3") .setContent(R.id.viewPager1)); TabWidget tabWidget = mTabHost.getTabWidget(); int count = tabWidget.getChildCount(); for (int i = 0; i != count; i++) { final int index = i; tabWidget.getChildAt(i).setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { mTabHost.setCurrentTab(index); mViewPager.setCurrentItem(index); } }); } mTabHost.setOnTabChangedListener(new OnTabChangeListener() { @Override public void onTabChanged(String tabId) { ELog.i(TAG, "@--> onTabChanged by tabId: " + tabId); } }); mViewPager.setOnPageChangeListener(new OnPageChangeListener() { @Override public void onPageSelected(int arg0) { ELog.i(TAG, "@--> onPageSelected: " + arg0); mTabHost.setCurrentTab(arg0); } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { } @Override public void onPageScrollStateChanged(int arg0) { } }); } private class MyPagerAdapter extends FragmentStatePagerAdapter { public MyPagerAdapter(FragmentManager fm) { super(fm); } @Override public Fragment getItem(int position) { ELog.i(TAG, "@--> getItem by position" + position); ELog.i(TAG, "@--> getItem by position" + position); return MyFragment.create(addresses[position]); } @Override public int getCount() { return addresses.length; } } public static class MyFragment extends Fragment { public static MyFragment create(String address) { ELog.i(TAG, "@--> MyFragment.create()"); MyFragment f = new MyFragment(); Bundle b = new Bundle(); b.putString("address", address); f.setArguments(b); return f; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { Random r = new Random(System.currentTimeMillis()); Bundle b = getArguments(); View v = inflater.inflate(R.layout.fragment_viewpager1_layout1, null); v.setBackgroundColor(r.nextInt() >> 8 | 0xFF << 24); TextView txvAddress = (TextView) v.findViewById(R.id.textView1); txvAddress.setTextColor(r.nextInt() >> 8 | 0xFF << 24); txvAddress.setBackgroundColor(r.nextInt() >> 8 | 0xFF << 24); txvAddress.setText(b.getString("address", "")); return v; } } }
布局：
<?xml version="1.0" encoding="utf-8"?> <TabHost xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/tabhost" android:layout_width="match_parent" android:layout_height="match_parent" > <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TabWidget android:id="@android:id/tabs" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="right|center_vertical" /> <FrameLayout android:id="@android:id/tabcontent" android:layout_width="match_parent" android:layout_height="match_parent" > <android.support.v4.view.ViewPager android:id="@+id/viewPager1" android:layout_width="match_parent" android:layout_height="match_parent" /> </FrameLayout> </LinearLayout> </TabHost>
2. 第二种，使用官方提供的方法 ActionBar + ViewPager 实现
原文地址：http://developer.android.com/training/implementing-navigation/lateral.html
该方法有两个缺陷，或者说不是缺陷，只是我没有找到解决的办法。
第一，tab点上不是很灵敏，可能就是这么设定的，为了防止频繁加载吧，但是体验稍稍不爽；
第二，ActionBar在最顶部，如果我的布局是：顶部一个带返回按钮的标题栏，中间是tab，底部是tabcontent，怎么搞？
Activity：
package com.swordy.demo.android.fragment; import java.util.Random; import android.app.ActionBar; import android.app.ActionBar.Tab; import android.app.ActionBar.TabListener; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentPagerAdapter; import android.support.v4.view.ViewPager; import android.support.v4.view.ViewPager.OnPageChangeListener; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.TextView; import com.swordy.demo.android.R; /** * 1. 使用ActionBar和ViewPager实现可以滑动的Tab * * @author swordy * @email [email protected] * @since Jan 20, 2014 * @version 1.0 */ public class SlideTabs2 extends FragmentActivity { private static final String TAG = "AndroidDemos.SlideTabs2"; private ViewPager mViewPager; private ActionBar mActionBar; private MyPagerAdapter mPagerAdapter; private String[] addresses = { "first", "second", "third" }; private Tab[] mTabs = new Tab[addresses.length]; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.fragment_viewpager1); mViewPager = (ViewPager) findViewById(R.id.viewPager1); mPagerAdapter = new MyPagerAdapter(getSupportFragmentManager()); mViewPager.setAdapter(mPagerAdapter); mViewPager.setOnPageChangeListener(mPageChangeListener); mActionBar = getActionBar(); mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); mActionBar.setDisplayShowTitleEnabled(false); mActionBar.setDisplayShowHomeEnabled(false); for (int i = 0; i != addresses.length; i++) { mTabs[i] = mActionBar.newTab().setText(addresses[i]).setTabListener(mTabListener); mActionBar.addTab(mTabs[i]); } } private OnPageChangeListener mPageChangeListener = new OnPageChangeListener() { @Override public void onPageSelected(int arg0) { mActionBar.setSelectedNavigationItem(arg0); } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { } @Override public void onPageScrollStateChanged(int arg0) { } }; private TabListener mTabListener = new TabListener() { @Override public void onTabSelected(Tab tab, android.app.FragmentTransaction ft) { if (tab == mTabs[0]) { mViewPager.setCurrentItem(0); } else if (tab == mTabs[1]) { mViewPager.setCurrentItem(1); } else if (tab == mTabs[2]) { mViewPager.setCurrentItem(2); } } @Override public void onTabUnselected(Tab tab, android.app.FragmentTransaction ft) { // TODO Auto-generated method stub } @Override public void onTabReselected(Tab tab, android.app.FragmentTransaction ft) { // TODO Auto-generated method stub } }; public class MyPagerAdapter extends FragmentPagerAdapter { public MyPagerAdapter(FragmentManager fm) { super(fm); } @Override public Fragment getItem(int position) { return MyFragment.create(addresses[position]); } @Override public int getCount() { return addresses.length; } } public static class MyFragment extends Fragment { public static MyFragment create(String address) { MyFragment f = new MyFragment(); Bundle b = new Bundle(); b.putString("address", address); f.setArguments(b); return f; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { Random r = new Random(System.currentTimeMillis()); Bundle b = getArguments(); View v = inflater.inflate(R.layout.fragment_viewpager1_layout1, null); v.setBackgroundColor(r.nextInt() >> 8 | 0xFF << 24); TextView txvAddress = (TextView) v.findViewById(R.id.textView1); txvAddress.setTextColor(r.nextInt() >> 8 | 0xFF << 24); txvAddress.setBackgroundColor(r.nextInt() >> 8 | 0xFF << 24); txvAddress.setText(b.getString("address", "")); return v; } } }
布局：
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <android.support.v4.view.ViewPager android:id="@+id/viewPager1" android:layout_width="match_parent" android:layout_height="match_parent" /> </LinearLayout>
3. 【推荐】第三种，使用 TabWidget + ViewPager 实现
该方法不错，推荐使用。
Activity：
package com.swordy.demo.android.fragment; import java.util.Random; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentStatePagerAdapter; import android.support.v4.view.PagerAdapter; import android.support.v4.view.ViewPager; import android.support.v4.view.ViewPager.OnPageChangeListener; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.Button; import android.widget.TabWidget; import android.widget.TextView; import com.swordy.demo.android.R; /** * 1. 使用TabWidget和ViewPager实现可滑动的Tab * * @author swordy * @email [email protected] * @since Jan 20, 2014 * @version 1.0 */ public class SlideTabs3 extends FragmentActivity { private static final String TAG = "AndroidDemos.SlideTabs3"; private ViewPager mViewPager; private PagerAdapter mPagerAdapter; private TabWidget mTabWidget; private String[] addresses = { "first", "second", "third" }; private Button[] mBtnTabs = new Button[addresses.length]; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.fragment_slidetabs3); mTabWidget = (TabWidget) findViewById(R.id.tabWidget1); mTabWidget.setStripEnabled(false); mBtnTabs[0] = new Button(this); mBtnTabs[0].setFocusable(true); mBtnTabs[0].setText(addresses[0]); mBtnTabs[0].setTextColor(getResources().getColorStateList(R.color.button_bg_color_selector)); mTabWidget.addView(mBtnTabs[0]); /* * Listener必须在mTabWidget.addView()之后再加入，用于覆盖默认的Listener， * mTabWidget.addView()中默认的Listener没有NullPointer检测。 */ mBtnTabs[0].setOnClickListener(mTabClickListener); mBtnTabs[1] = new Button(this); mBtnTabs[1].setFocusable(true); mBtnTabs[1].setText(addresses[1]); mBtnTabs[1].setTextColor(getResources().getColorStateList(R.color.button_bg_color_selector)); mTabWidget.addView(mBtnTabs[1]); mBtnTabs[1].setOnClickListener(mTabClickListener); mBtnTabs[2] = new Button(this); mBtnTabs[2].setFocusable(true); mBtnTabs[2].setText(addresses[2]); mBtnTabs[2].setTextColor(getResources().getColorStateList(R.color.button_bg_color_selector)); mTabWidget.addView(mBtnTabs[2]); mBtnTabs[2].setOnClickListener(mTabClickListener); mViewPager = (ViewPager) findViewById(R.id.viewPager1); mPagerAdapter = new MyPagerAdapter(getSupportFragmentManager()); mViewPager.setAdapter(mPagerAdapter); mViewPager.setOnPageChangeListener(mPageChangeListener); mTabWidget.setCurrentTab(0); } private OnClickListener mTabClickListener = new OnClickListener() { @Override public void onClick(View v) { if (v == mBtnTabs[0]) { mViewPager.setCurrentItem(0); } else if (v == mBtnTabs[1]) { mViewPager.setCurrentItem(1); } else if (v == mBtnTabs[2]) { mViewPager.setCurrentItem(2); } } }; private OnPageChangeListener mPageChangeListener = new OnPageChangeListener() { @Override public void onPageSelected(int arg0) { mTabWidget.setCurrentTab(arg0); } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { } @Override public void onPageScrollStateChanged(int arg0) { } }; private class MyPagerAdapter extends FragmentStatePagerAdapter { public MyPagerAdapter(FragmentManager fm) { super(fm); } @Override public Fragment getItem(int position) { return MyFragment.create(addresses[position]); } @Override public int getCount() { return addresses.length; } } public static class MyFragment extends Fragment { public static MyFragment create(String address) { MyFragment f = new MyFragment(); Bundle b = new Bundle(); b.putString("address", address); f.setArguments(b); return f; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { Random r = new Random(System.currentTimeMillis()); Bundle b = getArguments(); View v = inflater.inflate(R.layout.fragment_viewpager1_layout1, null); v.setBackgroundColor(r.nextInt() >> 8 | 0xFF << 24); TextView txvAddress = (TextView) v.findViewById(R.id.textView1); txvAddress.setTextColor(r.nextInt() >> 8 | 0xFF << 24); txvAddress.setBackgroundColor(r.nextInt() >> 8 | 0xFF << 24); txvAddress.setText(b.getString("address", "")); return v; } } }
布局：
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TabWidget android:id="@+id/tabWidget1" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="right|center_vertical" /> <android.support.v4.view.ViewPager android:id="@+id/viewPager1" android:layout_width="match_parent" android:layout_height="match_parent" /> </LinearLayout>
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